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  <title>Indicates if the parsed document is valid</title>
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  <div id="layout-content"><div id="xmlreader.isvalid" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">XMLReader::isValid</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.1.0, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">XMLReader::isValid</span> &mdash; <span class="dc-title">Indicates if the parsed document is valid</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-xmlreader.isvalid-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>XMLReader::isValid</strong></span>(): <span class="type">bool</span></div>

  <p class="para rdfs-comment">
   Returns a boolean indicating if the document being parsed is currently valid.
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-xmlreader.isvalid-parameters">
  <h3 class="title">参数</h3>
  <p class="para">此函数没有参数。</p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-xmlreader.isvalid-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>true</code></strong>， 或者在失败时返回 <strong><code>false</code></strong>。
  </p>
 </div>

 <div class="refsect1 examples" id="refsect1-xmlreader.isvalid-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-5488">
    <p><strong>示例 #1 Validating XML</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$xml&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">XMLReader</span><span style="color: #007700">::</span><span style="color: #0000BB">open</span><span style="color: #007700">(</span><span style="color: #DD0000">'test.xml'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;The&nbsp;validate&nbsp;parser&nbsp;option&nbsp;must&nbsp;be&nbsp;enabled&nbsp;for&nbsp;<br />//&nbsp;this&nbsp;method&nbsp;to&nbsp;work&nbsp;properly<br /></span><span style="color: #0000BB">$xml</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">setParserProperty</span><span style="color: #007700">(</span><span style="color: #0000BB">XMLReader</span><span style="color: #007700">::</span><span style="color: #0000BB">VALIDATE</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$xml</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">isValid</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>

 <div class="refsect1 notes" id="refsect1-xmlreader.isvalid-notes">
  <h3 class="title">注释</h3>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
   <span class="simpara">
    This checks the current node, not the entire document.
   </span>
  </p></blockquote>
 </div>

 <div class="refsect1 seealso" id="refsect1-xmlreader.isvalid-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="xmlreader.setparserproperty.html" class="methodname" rel="rdfs-seeAlso">XMLReader::setParserProperty()</a> - Set parser options</span></li>
    <li class="member"><span class="methodname"><a href="xmlreader.setrelaxngschema.html" class="methodname" rel="rdfs-seeAlso">XMLReader::setRelaxNGSchema()</a> - Set the filename or URI for a RelaxNG Schema</span></li>
    <li class="member"><span class="methodname"><a href="xmlreader.setrelaxngschemasource.html" class="methodname" rel="rdfs-seeAlso">XMLReader::setRelaxNGSchemaSource()</a> - Set the data containing a RelaxNG Schema</span></li>
    <li class="member"><span class="methodname"><a href="xmlreader.setschema.html" class="methodname" rel="rdfs-seeAlso">XMLReader::setSchema()</a> - Validate document against XSD</span></li>
   </ul>
  </p>
 </div>

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